Once the device lock is enabled, you must enter the password each time you turn on the device.

If you forget your password, bring your device to a Samsung Service Center to reset it.

Samsung is not responsible for any loss of passwords or private information or other damages caused by illegal software.

››Lock your SIM or USIM card

You can lock your device by activating the PIN supplied with your SIM or USIM card.

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In Menu mode, select Settings Security. Select PIN lock.

Enter the PIN of your SIM or USIM card and select Done.

Once the PIN lock is enabled, you must enter the PIN each time you turn on the device.

If you enter an incorrect PIN too many times, your SIM or USIM card will be blocked. You must enter a PIN unlock key (PUK) to unblock the SIM or USIM card.

If you block your SIM or USIM card by entering an incorrect PUK, bring the card to your service provider to unblock it.

Getting started

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Samsung GT-S5780YKDXXV, GT-S5780YKDXEV manual ››Lock your SIM or Usim card